CN108953121A - From back pressure constant pressure compressed-air energy-storage system and method - Google Patents
From back pressure constant pressure compressed-air energy-storage system and method Download PDFInfo
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- CN108953121A CN108953121A CN201810696080.7A CN201810696080A CN108953121A CN 108953121 A CN108953121 A CN 108953121A CN 201810696080 A CN201810696080 A CN 201810696080A CN 108953121 A CN108953121 A CN 108953121A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B41/00—Pumping installations or systems specially adapted for elastic fluids
- F04B41/06—Combinations of two or more pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/008—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being a fluid transmission link
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B41/00—Pumping installations or systems specially adapted for elastic fluids
- F04B41/02—Pumping installations or systems specially adapted for elastic fluids having reservoirs
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The invention discloses one kind from back pressure constant pressure compressed-air energy-storage system and method, including energy storage circuit and energy Releasing loop, energy storage circuit includes main road and branch, the main road and branch include low pressure compressor, the low pressure compressor of main road connects high pressure compressor, high-pressure compressor outlet is connect with gas storage/water tank, gas storage/water pot is connect with the hydraulic turbine, the hydraulic turbine drives branch low pressure compressor by mechanical driving device, the low-pressure compressor outlet of branch is mixed with the low-pressure compressor outlet of main road, constitutes energy storage circuit；Gas storage/water tank is connect with high pressure expansion machine, high pressure expansion machine outlet is divided to two pipelines, main line connects low-pressure expansion machine, bye-pass connects after the second low-pressure expansion machine, second low-pressure expansion machine connects water pump by mechanical driving device, water pump is connected to the gas storage/water tank, constitutes energy Releasing loop.
Description
Technical field
The present invention relates to one kind from back pressure constant pressure compressed-air energy-storage system and method.
Background technique
The energy is the basis of modern industry.With the rapid growth of energy-consuming in world wide, conventional fossil fuel money
Source faces exhaustion, and brings serious environmental problem.Thus, China is using wind-powered electricity generation, photovoltaic as the renewable energy of representative in recent years
Source power generating industry increases swift and violent.Since wind, photoelectricity have intermittent, fluctuation and randomness, the large-scale grid-connected serious shadow of meeting
The stability and safety of power grid are rung, abandonment, abandoning optical phenomenon also become increasingly conspicuous.To solve the above problems, reasonably developing energy storage
Technology is crucial.Currently, commercialized extensive physics energy storage technology only has water-storage and two kinds of compressed-air energy storage.It draws water
Accumulation of energy addressing is seriously restricted by geographical conditions and water resource and (need to build two reservoirs or dam with height difference), it could even be possible to
Influence area ecological environment.In contrast, compressed-air energy storage can according to capacity using underground salt cave, grotto, abandoned mine or
Ground container, gas line packing, and high reliablity, low unit cost, with development potential.
The gas storage chamber vol of conventional compressed air energy-storage system is fixed, and in energy storage stage, gas storage room pressure is gradually risen,
The continuous variable parameter operation of air compressor makes compression efficiency lower, and is releasing the energy stage, and expander inlet pressure persistently reduces,
Continuous variable parameter operation equally can make efficiency of expander low.Thus, conventional compressed air energy-storage system is generally using throttling
Compressed air is decompressed to after preset pressure by valve enters back into expanding machine acting, this can waste a large amount of pressure energies.To solve above-mentioned disadvantage
End, constant pressure compressed-air energy-storage system come into being.Constant pressure compressed-air energy-storage system keeps compression by changing gas storage volume
Air pressure is constant, to make compressor and expanding machine always work in declared working condition, to effectively improve system electricity-electricity effect
Rate.Constant pressure compressed-air energy-storage system usually utilizes the static pressure of water or pump pressure to maintain gas storage room pressure constant, needs big
Reusable water resource is measured, is difficult to efficiently use in the pressure energy of energy storage stage, the high pressure water of air storage chamber discharge, can lose
A part of water pressure energy.
Summary of the invention
The present invention to solve the above-mentioned problems, proposes one kind from back pressure constant pressure compressed-air energy-storage system and method, originally
Invention can overcome the shortcomings of existing constant pressure compressed air energy storage technology, by being arranged in the user sides such as residential block, office building, with
Building supply system combines, and adjusts the pressure in air accumulator using pump pressure, and recycle draining high-pressure energy in energy storage stage
Compressed air is produced, the high pressure water entered in gas storage/water tank can be generated using roturbo in the stage releasing, to realize in system
Pressure improves system effectiveness from maintenance.In addition, the system is simple there are also running, occupied area is small, highly-safe, improves and supplies water
System energy advantage.
To achieve the goals above, the present invention adopts the following technical scheme:
The first object of the present invention is to provide a kind of from back pressure constant pressure compressed-air energy-storage system, including energy storage circuit
With energy Releasing loop, in which:
The energy storage circuit includes main road and branch, and the main road and branch include low pressure compressor, main road
Low pressure compressor connects high pressure compressor, and high-pressure compressor outlet is connect with gas storage/water tank, and gas storage/water pot and the hydraulic turbine connect
It connects, the hydraulic turbine drives branch low pressure compressor, the low-pressure compressor outlet of branch and the low pressure of main road by mechanical driving device
Compressor outlet mixing, constitutes energy storage circuit；
Gas storage/the water tank is connect with high pressure expansion machine, and high pressure expansion machine outlet is divided to two pipelines, and main line connection is low
Compression swelling machine, after bye-pass connects the second low-pressure expansion machine, the second low-pressure expansion machine connects water pump by mechanical driving device,
Water pump is connected to the gas storage/water tank, constitutes energy Releasing loop.
Further, the air in the energy storage circuit successively passes through low pressure air compressor, pressure-air compression
Machine becomes the storable compressed air of high pressure, and compressed air is pressed into gas storage/water tank, the high pressure water in gas storage/water tank,
It is discharged and the hydraulic turbine is pushed to rotate, the hydraulic turbine drives the low pressure compressor rotary compression of branch empty by mechanical driving device
Gas, compressed air are mixed with the low pressure air compressor outlet air of main road.
Further, the compressed air passes through high pressure expansion machine, and high pressure expansion machine outlet air is divided into two strands, main road gas
Stream continues to press on low-pressure expansion machine acting power generation；Secondary gas flow pushes another branch low-pressure expansion machine rotation, and low-pressure expansion machine is logical
Cross mechanical driving device connection water pump.
Further, the outlet of the hydraulic turbine flows into accumulation of energy gas tank by festoon, and the outlet of accumulation of energy gas tank, which accesses, to be supplied
Pipe network.
Further, it is transmitted in the energy storage circuit and energy Releasing loop and is provided with valve on the pipeline of air
Door.
Further, it transmits to be provided with back on the pipeline of liquid in the energy storage circuit and energy Releasing loop and stop
Valve.
Further, heat exchanger, the high pressure are provided between the low pressure air compressor and High-Pressure Compressor
Heat exchanger is provided between air compressor and gas storage/water tank.
Further, heat exchanger is provided between the high pressure expansion machine and low-pressure expansion machine.
The second object of the present invention is to provide a kind of working method from back pressure constant pressure compressed-air energy-storage system, including storage
Energy process:
Under original state, high pressure water, hydraulic pressure and compressed air gas storage system highest gas storage pressure are filled in gas storage/water tank
It is identical；
Thermal energy storage process closes energy Releasing loop, opens energy storage circuit, air in low pressure compressor increasing temperature and pressure,
It is cooling subsequently into high pressure compressor continuation increasing temperature and pressure to flow through heat exchanger, high-pressure compressor outlet compressed air flows through heat exchanger
It cools, and enters storage in gas storage/water tank, the high pressure water in gas storage/water tank pushes the hydraulic turbine to rotate and be discharged, defeated
Water system pipe network is arrived out；Hydraulic turbine rotation drives low pressure compressor compressed air, compressed sky by mechanical driving device
Gas passes through air tube bundle flow again and enters in high pressure compressor through heat exchanger is cooling.
From the working method of back pressure constant pressure compressed-air energy-storage system, including exoergic process, energy storage circuit is closed, is beaten
Open energy Releasing loop, the heating of pressure-air in gas storage/water tank, into high pressure expansion machine in expansion work power generation, high pressure
In expander outlet press air flow through heat exchanger heating after, into low-pressure expansion machine in continue expansion work power generation, high compression swelling
Enter in low-pressure expansion machine after pressure atmosphere temperature rising after expanding against expanding machine rotation in machine exit portion and is discharged into ambient air；
Low-pressure expansion machine drives water pump acting by mechanical driving device, enters after water boosting and maintains constant pressure in tank in gas storage/water tank.
Further, or, original state, the high pressure water of partial volume is filled in gas storage/water tank, it is waterborne in hydraulic pressure and tank
The air pressure in face is all gas storage system highest gas storage pressure.
Compared with prior art, the invention has the benefit that
(1) using the water in the water system of building construction object group, the pressure controlled in gas storage/water tank is constant, so that
Energy storage/release process, compressor/expanding machine all work at constant pressure, thus expansion and throttling during reducing energy storage/release
Energy loss improves the energy storage efficiency of system.
(2) high pressure water of thermal energy storage process discharge, pushes hydraulic turbine rotation, drives branch compressor by mechanical driving device
Operating is also used to compressed air, reduces compressed air wasted work；Exoergic process expanding machine drives branch by mechanical driving device
Road pump operation increases the pressure for entering water in gas storage/water tank, reduces the additional energy consumption of water pump boosting water, improves and be
The energy storage efficiency of system.
(3) energy-storage system combines the water system of compressed-air energy-storage system and building construction object group, gas storage/water storage
Tank can use the water tank of the water system of original building construction object group, and water pump can use original building construction object group's
The booster of water system, environmentally friendly, economy is higher, has wide prospect of the application.
(4) the compression/expansion machine of energy-storage system is all run at constant pressure, reduces variable working condition compressor/expanding machine
Life consumption；Meanwhile the water pump of water system also works in the case where determining operating condition, also reduces loss of the frequency conversion to the water pump service life,
Safety, better economy.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.
Fig. 1 is structural schematic diagram of the first example of the invention from back pressure constant pressure compressed-air energy-storage system；
Fig. 2 is structural schematic diagram of the second example of the invention from back pressure constant pressure compressed-air energy-storage system；
Wherein, 1,32- low pressure compressor 4- high pressure compressor
18,22- low-pressure expansion machine 14- high pressure expansion machine
23,31- mechanical driving device 9- gas storage/water tank 24- water pump 30- hydraulic turbine
3,6,12,16,20,34- heat exchanger 37- energy storage gas tank
2,5,8,10,13,17,21,33- tube bank
25,27,28,35- tube bank 7,11,15,19,26,29- valve 36- check-valves；
Specific embodiment:
The invention will be further described with embodiment with reference to the accompanying drawing.
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
In the present invention, term for example "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", " side ",
The orientation or positional relationship of the instructions such as "bottom" is to be based on the orientation or positional relationship shown in the drawings, only to facilitate describing this hair
Bright each component or component structure relationship and the relative of determination, not refer in particular to either component or element in the present invention, cannot understand
For limitation of the present invention.
In the present invention, term such as " affixed ", " connected ", " connection " be shall be understood in a broad sense, and indicate may be a fixed connection,
It is also possible to be integrally connected or is detachably connected；It can be directly connected, it can also be indirectly connected through an intermediary.For
The related scientific research of this field or technical staff can determine the concrete meaning of above-mentioned term in the present invention as the case may be,
It is not considered as limiting the invention.
Embodiment 1:
As shown in Figure 1, a kind of from back pressure constant pressure compressed-air energy-storage system comprising low pressure air compressor (1,32),
Heat exchanger (3,6,12,16,20,34) between grade, High-Pressure Compressor 4, constant volume gas storage/water tank 9, low-pressure expansion machine (18,
22), high pressure expansion machine 14, water pump 24, the hydraulic turbine 30, mechanical driving device (23,31), valve (7,11,15,19,26,29),
Air restrains (2,5,8,10,13,17,21,33), festoon (25,27,28).
Low pressure compressor 1 is restrained 2 heat exchangers 3 by air and is connected to high pressure compressor 4.High pressure compressor 4 passes through air
It restrains 5 heat exchanger, 6 valve 7 and air tube bank 8 is connected with gas storage/water tank 9.Gas storage/water tank 9 is through 28 valve 29 of festoon
It is connected with the hydraulic turbine 30.The hydraulic turbine 30 connects low pressure compressor 32 by mechanical driving device 31.Low pressure compressor 32 passes through
Air is restrained 33 heat exchangers 34 and is connected to high pressure compressor 4.
Gas storage/water tank 9 is connected to by air tube bank 10 valve, 11 heat exchanger, 12 air tube bank 13 with high pressure expansion machine 14.
High pressure expansion machine 14 is connected by 15 heat exchanger of valve, 16 air tube bank 17 with low-pressure expansion machine 18.High pressure expansion machine 14 passes through
19 heat exchanger of valve, 20 air tube bank 21 is connected with low-pressure expansion machine 22.Low-pressure expansion machine 22 by mechanical driving device 23 with
Water pump 24 is connected.Water pump 24 is connected by 25 valve of festoon, 26 festoon 27 with gas storage/water tank 9.
Thermal energy storage process and exoergic process of the present embodiment introduced below from back pressure constant pressure compressed-air energy storage.
(1) under original state, all valves (7,11,15,19,26,29) are closed state.It is filled in gas storage/water tank
Full high pressure water, hydraulic pressure are identical with compressed air gas storage system highest gas storage pressure.Or partial volume is filled in gas storage/water tank
The air pressure of high pressure water, the face waterborne in hydraulic pressure and tank is all gas storage system highest gas storage pressure.
(2) thermal energy storage process is closed valve (11,15,19,26), is opened valve (7,29), air is at 1 liter of low pressure compressor
It is cooling subsequently into the continuation increasing temperature and pressure of high pressure compressor 4 to flow through heat exchanger 3 by air tube bank 2 for temperature rise pressure.High pressure compressor
4 outlet compressed airs are flowed through heat exchanger 6 and are cooled by air tube bank 5, and by valve 7 and air tube bank 8 into gas storage/
Storage in water tank 9.High pressure water in gas storage/water tank 9 pushes the hydraulic turbine 30 to rotate and is discharged through 28 valve 29 of festoon, defeated
The water system pipe network of building construction object group is arrived out.The rotation of the hydraulic turbine 30 drives low pressure compressor 32 by mechanical driving device 31
Compressed air, compressed air flow through the cooling of heat exchanger 34 by air tube bank 33 again and enter in high pressure compressor 4.
(3) exoergic process is closed valve (7,29), is opened valve (11,15,19,26), the high pressure in gas storage/water tank 9
Air restrains 10 valves 11 by air and flows through the heating of heat exchanger 12, is then entered in high pressure expansion machine 14 by air tube bank 13
Expansion work power generation.After pressure air flows through the heating of heat exchanger 16 by valve 15 in the outlet of high pressure expansion machine 14, then pass through air
Tube bank 17, which enters in low-pressure expansion machine 18, continues expansion work power generation.Air is pressed to pass through valve in 14 exit portion of high pressure expansion machine
19 flow through the heating of heat exchanger 20, then are entered in low-pressure expansion machine 22 by air tube bank 21 and expand against the rotation heel row of expanding machine 22
Enter ambient air out.Low-pressure expansion machine 22 drives water pump 24 to do work by mechanical driving device 23, and water pump 24 is reservoir water
Entered after boosting by 25 valve of festoon, 26 festoon 27 and maintains constant pressure in tank in gas storage/water tank 9.
Embodiment 2
As shown in Fig. 2, being another embodiment of the invention, the difference of embodiment 2 and embodiment 1 is: the hydraulic turbine 30
Outlet flows into an accumulation of energy gas tank 37 by 35 check-valves 36 of festoon.The outlet access building construction object group's of accumulation of energy gas tank 37
Water supply network supplies water.
Under original state, nitrogen is filled in accumulation of energy gas tank 37 or is packed into the nitrogen of partial volume.Thermal energy storage process, opening are stopped
Valve 36 is returned, the water of the certain pressure of the outlet of the hydraulic turbine 30 outflow enters in accumulation of energy gas tank 37, the nitrogen pressure in accumulation of energy gas tank 37
It increases.
As different embodiments, the increased accumulation of energy gas tank 37 of embodiment 2 can play the role of pressure buffer.Work as building
When the water supply network of space buildings is changed with Water l oad, the pressure of water supply network entrance is also required to occur corresponding
Variation.The nitrogen of certain pressure can play buffer function on the water surface in accumulation of energy gas tank 37.I.e. are as follows: water supply network load reduction
When, accumulation of energy gas tank 37 exports water and reduces, and nitrogen compression increases pressure, and 30 outlet pressure of the hydraulic turbine is constant；Water supply network load
When raising, accumulation of energy gas tank 37 exports water and improves, and the nitrogen expansion of certain pressure reduces pressure, and 30 outlet pressure of the hydraulic turbine is not
Become.Under the action of check-valves, reverse flow will not occur for water, influence 30 normal constant load operation of the hydraulic turbine.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (10)
1. it is a kind of from back pressure constant pressure compressed-air energy-storage system, it is characterized in that: including energy storage circuit and energy Releasing loop,
Wherein:
The energy storage circuit includes main road and branch, and the main road and branch include low pressure compressor, the low pressure of main road
Compressor connects high pressure compressor, and high-pressure compressor outlet is connect with gas storage/water tank, and gas storage/water pot is connect with the hydraulic turbine, water
Turbine drives branch low pressure compressor, the low-pressure compressor outlet of branch and the low pressure compressor of main road by mechanical driving device
Outlet mixing, constitutes energy storage circuit；
Gas storage/the water tank is connect with high pressure expansion machine, and high pressure expansion machine outlet is divided to two pipelines, and it is swollen that main line connects low pressure
Swollen machine, after bye-pass connects the second low-pressure expansion machine, the second low-pressure expansion machine connects water pump, water pump by mechanical driving device
It is connected to the gas storage/water tank, constitutes energy Releasing loop.
2. it is as described in claim 1 a kind of from back pressure constant pressure compressed-air energy-storage system, it is characterized in that: the energy storage returns
Air in road successively passes through low pressure air compressor, High-Pressure Compressor, becomes the storable compressed air of high pressure, compression
Air is pressed into gas storage/water tank, and the high pressure water in gas storage/water tank is discharged and the hydraulic turbine is pushed to rotate, the hydraulic turbine passes through
Mechanical driving device drives the low pressure compressor rotary compression air of branch, the low-pressure air compression of compressed air and main road
The mixing of machine outlet air.
3. it is as described in claim 1 a kind of from back pressure constant pressure compressed-air energy-storage system, it is characterized in that: the compressed air passes through
High pressure expansion machine is crossed, high pressure expansion machine outlet air is divided into two strands, and main road air-flow continues to press on low-pressure expansion machine acting power generation；Branch
Road air-flow pushes another branch low-pressure expansion machine rotation, and low-pressure expansion machine connects water pump by mechanical driving device.
4. it is as described in claim 1 a kind of from back pressure constant pressure compressed-air energy-storage system, it is characterized in that: the hydraulic turbine goes out
Mouth passes through festoon and flows into accumulation of energy gas tank, and the outlet of accumulation of energy gas tank accesses water supply network.
5. it is as described in claim 1 a kind of from back pressure constant pressure compressed-air energy-storage system, it is characterized in that: the energy storage returns
It is transmitted in road and energy Releasing loop and is provided with valve on the pipeline of air.
6. it is as described in claim 1 a kind of from back pressure constant pressure compressed-air energy-storage system, it is characterized in that: the energy storage returns
It is transmitted in road and energy Releasing loop and is provided with check valves on the pipeline of liquid.
7. one kind as described in claim 1 is from back pressure constant pressure compressed-air energy-storage system, it is characterized in that: the low-pressure air pressure
It is provided with heat exchanger between contracting machine and High-Pressure Compressor, is arranged between the High-Pressure Compressor and gas storage/water tank
There is heat exchanger.
8. one kind as described in claim 1 is from back pressure constant pressure compressed-air energy-storage system, it is characterized in that: the high pressure expansion machine
Heat exchanger is provided between low-pressure expansion machine.
9. a kind of such as the described in any item working methods from back pressure constant pressure compressed-air energy-storage system of claim 1-8, spy
Sign is: including thermal energy storage process:
Under original state, high pressure water, hydraulic pressure and compressed air gas storage system highest gas storage pressure phase are filled in gas storage/water tank
Together；
Thermal energy storage process closes energy Releasing loop, opens energy storage circuit, and air is flowed through in low pressure compressor increasing temperature and pressure
Heat exchanger is cooling to continue increasing temperature and pressure subsequently into high pressure compressor, and it is cooling that high-pressure compressor outlet compressed air flows through heat exchanger
Cooling, and enter storage in gas storage/water tank, the high pressure water in gas storage/water tank pushes the hydraulic turbine to rotate and be discharged, and is output to
Water system pipe network；Hydraulic turbine rotation drives low pressure compressor compressed air by mechanical driving device, and compressed air is again
Entered in high pressure compressor by air tube bundle flow through heat exchanger is cooling；
Exoergic process closes energy storage circuit, opens energy Releasing loop, the pressure-air heating in gas storage/water tank, into
Enter expansion work in high pressure expansion machine to generate electricity, it is swollen into low pressure after pressure air flows through heat exchanger heating in high pressure expansion machine outlet
Continue expansion work power generation in swollen machine, is pushed away after atmosphere temperature rising is pressed in high pressure expansion machine exit portion into expansion in low-pressure expansion machine
Ambient air is discharged into after dynamic expanding machine rotation；Low-pressure expansion machine drives water pump acting, water boosting by mechanical driving device
Enter afterwards and maintains constant pressure in tank in gas storage/water tank.
10. working method as claimed in claim 9, it is characterized in that: filling partial volume in gas storage/water tank or, original state
High pressure water, the air pressure in the face waterborne in hydraulic pressure and tank is all gas storage system highest gas storage pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810696080.7A CN108953121B (en) | 2018-06-29 | 2018-06-29 | From back pressure constant pressure compressed-air energy-storage system and method |
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| CN201810696080.7A CN108953121B (en) | 2018-06-29 | 2018-06-29 | From back pressure constant pressure compressed-air energy-storage system and method |
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| CN108953121B CN108953121B (en) | 2019-11-12 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106440509A (en) * | 2016-03-14 | 2017-02-22 | 李华玉 | Third-class thermally driven compression heat pump |
| CN111550293A (en) * | 2020-04-20 | 2020-08-18 | 西安交通大学 | Efficient variable-working-condition compressed gas energy release system and method |
| CN112554984A (en) * | 2020-11-24 | 2021-03-26 | 西安交通大学 | Constant-pressure water-pumping compressed air energy storage system with heat storage function and operation method |
| CN114738072A (en) * | 2022-04-28 | 2022-07-12 | 西安热工研究院有限公司 | Compressed air energy storage system and method for pumping water and releasing water at constant pressure |
| CN114754519A (en) * | 2022-03-21 | 2022-07-15 | 西安交通大学 | Water pumping compressed air energy storage system and method for storing energy and storing heat by utilizing geothermal well |
| CN114909196A (en) * | 2022-04-28 | 2022-08-16 | 西安热工研究院有限公司 | Pumped compression isobaric release air energy storage system and method |
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| CN117318315A (en) * | 2023-09-25 | 2023-12-29 | 水利部交通运输部国家能源局南京水利科学研究院 | Heat-insulating pumping compressed air energy storage device and method based on multistage water circulation |
| CN117318315B (en) * | 2023-09-25 | 2024-04-30 | 水利部交通运输部国家能源局南京水利科学研究院 | Heat-insulating pumping compressed air energy storage device and method based on multistage water circulation |
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